High precision vector and tensor analyzing powers of elastic deuteron-proton d+p scattering have been measured at intermediate energies to investigate effects of three-nucleon forces (3NF). Angular distribution in the range of 70-120 degree in the center-of mass frame for incident-deuteron energies of 130 and 180 MeV were obtained using the RIKEN facility. The beam polarization was unambiguously determined by measuring the 12C(d,alpha)10B(2+) reaction at 0 degree. Results of the measurements are compared with state-of-the-art three-nucleon calculations. The present modeling of nucleon-nucleon forces and its extension to the three-nucleon system is not sufficient to describe the high precision data consistently and requires, therefore, further investigation.
@article{arxiv.nucl-ex/0611027,
title = {Precision measurement of vector and tensor analyzing powers in elastic deuteron-proton scattering},
author = {H. Mardanpour and H. R. Amir-Ahmadi and A. Deltuva and K. Itoh and N. Kalantar-Nayestanaki and T. Kawabata and H. Kuboki and Y. Maeda and J. G. Messchendorp and S. Sakaguchi and H. Sakai and N. Sakamoto and Y. Sasamoto and M. Sasano and K. Sekiguchi and K. Suda and Y. Takahashi and T. Uesaka and H. Witala and K. Yako},
journal= {arXiv preprint arXiv:nucl-ex/0611027},
year = {2008}
}